1756-L55M12 Processor Module Allen-Bradley

Allen-Bradley 1756-L55M12 ControlLogix Logix5555 Processor

Key Technical Specifications

• Brand: Allen-Bradley
• Model Number: 1756-L55M12
• Processor Type: Logix5555 Controller
• User Memory: 750 Kilobytes RAM
• I/O Memory: 208 Kilobytes
• Maximum I/O Capacity: 128,000 Points
• Analog I/O Capacity: 4,000 In / 2,000 Out
• Program Scan Time: 0.08 milliseconds
• Battery Type: 1756-BA1 or 1756-BATM

Performance Features

• High-speed processing with 0.08 ms program scan time
• Substantial 750KB user memory for complex applications
• Large I/O capacity supports 128,000 discrete points
• Extensive analog handling with 4,000 inputs and 2,000 outputs
• Open-style enclosure design for standard panel mounting
• Compact weight of 0.35 kilograms (0.78 pounds)

Communication Capabilities

• Supports ControlNet network communication
• Compatible with EtherNet/IP protocols
• Integrates with DeviceNet and DH+ networks
• Works with universal remote I/O systems
• Redundant controller capability on ControlNet networks
• Serial communication via 1756-CP3 or 1747-CP3 cables

Power Requirements

• Backplane current: 1.23A at 5.1V DC
• Additional current: 14mA at 24V DC
• Power dissipation: 5.6 Watts maximum
• Thermal dissipation: 19.1 BTU per hour
• Battery backup: 1756-BA1 lithium battery
• Isolation voltage: 30V continuous rating

Environmental Specifications

• Operating temperature: 0 to 60°C (32 to 140°F)
• Storage temperature: -40 to 85°C (-40 to 185°F)
• Relative humidity: 5% to 95% non-condensing
• Operating shock resistance: 30G maximum
• Non-operating shock: 50G endurance
• Vibration resistance: 2G at 10-500 Hz

Safety & Compliance

• RF immunity: 10V RMS from 150 kHz to 80 MHz
• Isolation tested at 707V DC for 60 seconds
• Wiring category: Category 2 on communication ports
• Basic insulation type for electrical safety
• Industrial-grade construction for reliable operation
• Designed for continuous industrial use

Frequently Asked Questions

What is the memory capacity of the 1756-L55M12 processor?

The controller provides 750KB of user memory and 208KB of dedicated I/O memory for program execution.

What networks does this processor support?

The 1756-L55M12 supports ControlNet, EtherNet/IP, DeviceNet, DH+ and universal remote I/O networks.

What is the maximum I/O capacity?

This processor can handle up to 128,000 I/O points including 4,000 analog inputs and 2,000 analog outputs.

What battery does this controller use?

The processor requires either 1756-BA1 or 1756-BATM lithium battery for memory backup.

Can this processor be used in redundant systems?

Yes, the controller supports redundant operation when used in ControlNet networks.

Is this product new and genuine?

We supply only authentic, brand new Allen-Bradley products in original packaging.

What is your shipping time?

We process and ship within 5 business days using DHL, FedEx, or UPS carriers.

For technical specifications or purchasing information, contact: sales@nex-auto.com